Hebrews 8:7
For if the first covenant had been unexceptionable, there had been no room for a second:
Hebrews 7:11
Now if perfection were by the Levitical priesthood, (for under it the people received the law) what farther need was there that another priest should arise after the order of Melchisedec, and not after the order of Aaron?
Hebrews 7:18
For there is indeed a disannulling of the preceding command, on account of it's weakness and unprofitableness;
Galatians 3:21
Is the law then contrary to the promises of God? not at all: for if a law had been given, which could have confered life, certainly righteousness would have been by the law.
Hebrews 8:6
But now He hath obtained a more excellent ministry, inasmuch as He is also the mediator of a better covenant, which is established upon better promises.